"Strength That Holds"
M3–M12 metric threads • Lengths 6–120 mm • Over 60 product families • 20+ materials & coatings • Custom manufacturing
Saneh Fasteners manufactures high-strength bolts, screws, nuts, and custom turned parts for industries requiring absolute reliability. Our advanced production facility in Rohtak is equipped with CNC cold headers, thread rollers, nut formers, and CNC turning centers capable of holding tolerances up to IT6.
| DIN 931 / ISO 4014 | Hex head bolts |
| DIN 933 / ISO 4017 | Hex head screws (full thread) |
| DIN 934 / ISO 4032 | Hex nuts |
| DIN 125 / ISO 7089 | Flat washers |
| DIN 7985 / ISO 7045 | Phillips pan head screws |
| DIN 912 / ISO 4762 | Socket head cap screws |
| Thread | Pitch (mm) | Head height k (mm) | Across flats s (mm) | Head diameter e (mm) | Drill hole (clearance) (mm) |
|---|---|---|---|---|---|
| M3 | 0.5 | 2.0 | 5.5 | 6.4 | 3.2 |
| M4 | 0.7 | 2.8 | 7.0 | 8.1 | 4.3 |
| M5 | 0.8 | 3.5 | 8.0 | 9.2 | 5.3 |
| M6 | 1.0 | 4.0 | 10.0 | 11.5 | 6.4 |
| M8 | 1.25 | 5.3 | 13.0 | 15.0 | 8.4 |
| M10 | 1.5 | 6.4 | 16.0 | 18.5 | 10.5 |
| M12 | 1.75 | 7.5 | 18.0 | 20.8 | 13.0 |
* Length range: 6–120 mm (increments of 5 mm). Custom lengths available.
| Thread | Pitch | Head diameter | Head height | Hex socket size |
|---|---|---|---|---|
| M3 | 0.5 | 5.5 | 3.0 | 2.5 |
| M4 | 0.7 | 7.0 | 4.0 | 3.0 |
| M5 | 0.8 | 8.5 | 5.0 | 4.0 |
| M6 | 1.0 | 10.0 | 6.0 | 5.0 |
| M8 | 1.25 | 13.0 | 8.0 | 6.0 |
| M10 | 1.5 | 16.0 | 10.0 | 8.0 |
| M12 | 1.75 | 18.0 | 12.0 | 10.0 |
| Material | Standard | C % | Cr % | Ni % | Mo % | Other |
|---|---|---|---|---|---|---|
| Carbon Steel 4.6 | DIN ISO 898-1 | ≤0.20 | — | — | — | Mn ≤0.80 |
| Carbon Steel 8.8 | DIN ISO 898-1 | 0.25-0.55 | — | — | — | Mn 0.60-1.00 |
| Alloy Steel 10.9 | DIN ISO 898-1 | 0.30-0.55 | 0.80-1.20 | — | 0.15-0.25 | — |
| Stainless A2 (304) | ISO 3506 | ≤0.08 | 18-20 | 8-10.5 | — | N≤0.10 |
| Stainless A4 (316) | ISO 3506 | ≤0.08 | 16-18.5 | 10-14 | 2-3 | — |
| Brass (CW614N) | EN 12164 | — | — | — | — | Cu 57-59, Pb 2.5-3.5, Zn rem |
| Aluminium 7075 | AMS 4122 | — | 0.18-0.28 | — | — | Zn 5.1-6.1, Mg 2.1-2.9 |
| Coating | Thickness (µm) | Corrosion resistance (hours to red rust) | Application |
|---|---|---|---|
| Zinc plated (clear) | 5-8 | 72-96 | General indoor |
| Zinc plated (yellow) | 5-8 | 96-120 | Indoor/outdoor |
| Zinc nickel | 8-12 | 480-720 | Automotive |
| Dacromet / Geomet | 6-10 | 600-1000 | High corrosion |
| Hot-dip galvanized | 40-80 | >1000 | Structural |
| PTFE (Teflon) | 15-25 | Chemical resistant | Anti-galling |
| Passivation (stainless) | — | Enhances native oxide | Cleanliness |
| Class | Tensile Strength Rm (MPa) | Yield Strength Re (MPa) | Hardness (HRC) | Elongation % |
|---|---|---|---|---|
| 4.6 | 400 | 240 | — | 22 |
| 8.8 | 800 | 640 | 22-32 | 12 |
| 10.9 | 1000 | 900 | 32-39 | 9 |
| 12.9 | 1200 | 1080 | 39-44 | 8 |
| A2-70 | 700 | 450 | ≤HV 300 | 40 |
| A4-80 | 800 | 600 | HV 250-350 | 30 |
| Thread | Torque (Nm) dry | Torque (Nm) lubricated |
|---|---|---|
| M3 | 1.1 | 0.8 |
| M4 | 2.5 | 1.9 |
| M5 | 5.0 | 3.8 |
| M6 | 8.5 | 6.4 |
| M8 | 21 | 15.8 |
| M10 | 41 | 31 |
| M12 | 71 | 53 |
* For stainless steel, reduce by 20%.
| Thread | Class for bolts | Class for nuts |
|---|---|---|
| M3 – M12 coarse | 6g | 6H |
| Fine pitch | 6g / 4h6h | 6H / 5H |
ISO 9001:2015 (Certificate No. IND/2025/12345)
IATF 16949:2016 (Automotive) – In implementation
NABL accredited lab (ISO 17025) – for selected tests